﻿using System;
using System.Configuration;
namespace DBUtility
{
    
    public class PubConstant
    {

        /// <summary>
        /// 获取连接字符串
        /// </summary>
        public static string ConnectionString
        {
            get
            {
                string sConFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
                string[] cell = sConFile.Split('\\');
                if (cell[cell.Length - 1].ToLower() == "web.config")
                {
                    string _connectionString = ConfigurationManager.AppSettings["ConnectionString"];
                    string ConStringEncrypt = ConfigurationManager.AppSettings["ConStringEncrypt"];
                    if (ConStringEncrypt == "true")
                    {
                        _connectionString = DESEncrypt.Decrypt(_connectionString);
                    }
                    return _connectionString;
                }
                else
                {
                    string _connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
                    string ConStringEncrypt = ConfigurationManager.ConnectionStrings["ConStringEncrypt"].ConnectionString;
                    if (ConStringEncrypt == "true")
                    {
                        _connectionString = DESEncrypt.Decrypt(_connectionString);
                    }
                    return _connectionString;
                }
            }
        }

        ///// <summary>
        ///// 获取连接字符串
        ///// </summary>
        //public static string ConnectionString
        //{           
        //    get 
        //    {
        //        string _connectionString = ConfigurationManager.AppSettings["ConnectionString"];       
        //        string ConStringEncrypt = ConfigurationManager.AppSettings["ConStringEncrypt"];
        //        if (ConStringEncrypt == "true")
        //        {
        //            _connectionString = DESEncrypt.Decrypt(_connectionString);
        //        }
        //        return _connectionString; 
        //    }
        //}

        /// <summary>
        /// 得到web.config里配置项的数据库连接字符串。
        /// </summary>
        /// <param name="configName"></param>
        /// <returns></returns>
        public static string GetConnectionString(string configName)
        {
            string connectionString = ConfigurationManager.AppSettings[configName];
            string ConStringEncrypt = ConfigurationManager.AppSettings["ConStringEncrypt"];
            if (ConStringEncrypt == "true")
            {
                connectionString = DESEncrypt.Decrypt(connectionString);
            }
            return connectionString;
        }


    }
}
